I have to agree with Squarius. And RoadFourK is good to, but I wouldn't have put it 2nd I'm afraid.

For my own choices, I liked Pitfall a lot. I think it's a great achievement. Others get more difficult for me to choose, but I guess I'd go for 4K V-ball and aichess4k. In fact I was tempted to also write a 4k chess game, just to have a chess battle

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